In Science
- The atomic number of argon
- The 18-electron rule is a rule of thumb in transition metal chemistry for characterising and predicting the stability of metal complexes
- The number of years in the Saros cycle of eclipses of the sun and moon
Read more about this topic: 18 (number)
Famous quotes containing the word science:
“After science comes sentiment.”
—Herman Melville (1819–1891)
“The well-educated young woman of 1950 will blend art and sciences in a way we do not dream of; the science will steady the art and the art will give charm to the science. This young woman will marry—yes, indeed, but she will take her pick of men, who will by that time have begun to realize what sort of men it behooves them to be.”
—Ellen Henrietta Swallow Richards (1842–1911)